CN217144765U

CN217144765U - Ejection mechanism applied to die

Info

Publication number: CN217144765U
Application number: CN202220909074.7U
Authority: CN
Inventors: 查鸿达
Original assignee: Shenzhen Hongwei Photoelectric Technology Co ltd
Current assignee: Shenzhen Hongwei Photoelectric Technology Co ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-08-09
Anticipated expiration: 2032-04-19

Abstract

The utility model relates to an ejection mechanism applied to a mould, which comprises a fixed part and a plurality of ejection parts in driving connection with the fixed part; a gap is arranged between the ejecting piece and the fixing piece; the distances of the gaps are different. This application utilizes and sets up the clearance of different migration distances between liftout and mounting, and when the mounting was driven, the liftout was driven ejecting according to the distance increase order in clearance successively, and the liftout of minimum clearance distance is ejecting at first promptly, and the liftout of maximum clearance distance is ejecting at last. The ejection pieces cannot be simultaneously driven by the fixing piece to be ejected synchronously, and the distances of different gaps among the ejection pieces are determined according to the specific conditions of the product. The ejection mechanism can be applied to any injection mold and die-casting mold, realizes automatic gate cutting and product correction deformation, and has a wide application range.

Description

Ejection mechanism applied to die

Technical Field

The utility model relates to a mould field of making, more specifically say, relate to a be applied to ejection mechanism of mould.

Background

When the product is processed, molten plastic or metal is injected into a die cavity from a nozzle of an injection molding machine or a die casting machine, and the molten plastic or metal is solidified according to the shape of the die cavity after being cooled to form a required plastic product or a required metal product. At the moment, the injection molding machine or the die casting machine opens the die, the fixed die is separated from the movable die, and the injection molding machine or the die casting machine drives the ejector rod fixing plate to move so as to drive the ejector rod to eject a product in the die and complete the current production cycle.

In the prior art, when the ejector pin fixed plate is only a set of, all ejector pins all receive the drive simultaneously, synchronous ejecting, and the application range of this kind of mode is comparatively limited, can't satisfy the injection molding or the die-casting of multiple product.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide an ejection mechanism who is applied to the mould.

The utility model provides a technical scheme that its technical problem adopted is:

the ejection mechanism applied to the die comprises a fixed piece and a plurality of ejection pieces in driving connection with the fixed piece; a gap is arranged between the ejecting piece and the fixing piece; the distances of the gaps are different.

Furthermore, the ejection piece comprises an ejector rod and a convex block arranged at one end of the ejector rod, and a cavity capable of accommodating the convex block is formed in the fixing piece; the gap is formed between the end face of the lug and the inner surface of the fixing piece.

Furthermore, the fixing piece is composed of an upper fixing plate and a lower fixing plate; the cavity is formed by surrounding the upper fixing plate and the lower fixing plate, and the ejector rod penetrates through the upper fixing plate.

Further, the gap is formed between the end face of the bump and the end face of the lower fixing plate.

Further, the gap has a distance of 0.

Further, the distance of the gap is not 0.

Furthermore, a cylinder penetrating through the lower fixing plate is arranged on the bump.

Further, the diameter of the bump is larger than that of the cylinder.

The beneficial effects of the utility model reside in that: the gaps with different moving distances are arranged between the ejection part and the fixing part, when the fixing part is driven, the ejection part cannot be simultaneously taken up by the fixing part and synchronously ejected, but is ejected sequentially according to the distance sequence of the gaps, so that the sprue can be automatically cut off and the deformation of products can be corrected in a mold when any product is subjected to injection molding or die casting, and the application range is wide.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:

fig. 1 is a schematic view of an initial state of an ejection mechanism applied to a mold according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a state when the moving distance of the embodiment of the present invention is the gap b;

fig. 3 is a schematic diagram of a state when the moving distance of the embodiment of the present invention is the gap a;

fig. 4 is a schematic diagram of a state when the moving distance of the embodiment of the present invention is greater than a.

In the figure, 1, a first mandril; 2. a second ejector rod; 3. a third ejector rod; 4. a bump; 5. a cylinder; 6. an upper fixing plate; 7. a lower fixing plate; 8. a cavity; 9. and (4) a die bottom plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

The embodiment of the utility model provides an ejection mechanism applied to a mould, which comprises a fixed part and a plurality of ejection parts in driving connection with the fixed part; a gap is arranged between the ejecting piece and the fixing piece; the distances of the gaps are different. The ejection piece comprises an ejector rod and a convex block arranged at one end of the ejector rod, and a containing cavity capable of containing the convex block is arranged in the fixing piece; a gap is formed between the end face of the lug and the inner surface of the fixing piece.

The ejector rod penetrates through the fixing piece, and the lug can move or not move in the cavity. The distances between the end faces of the lugs and the inner surface of the fixed part are different, wherein the distance of the gap is more than or equal to 0. When the fixed piece is driven, the ejection pieces are sequentially driven to eject according to the increasing sequence of the gap distance, namely the ejection piece with the minimum gap distance is ejected first, and the ejection piece with the maximum gap distance is ejected last. The automatic gate cutting device can automatically cut off a gate and correct the deformation of a product in a die during injection molding or die casting of any product, and is wide in application range.

In a further embodiment, the fixing member is composed of an upper fixing plate and a lower fixing plate; the cavity is surrounded by an upper fixing plate and a lower fixing plate, and the ejector rod penetrates through the upper fixing plate. A gap is formed between the end face of the bump and the end face of the lower fixing plate.

The upper fixing plate is fixedly connected with the lower fixing plate through screws, and a through hole for the ejector rod to pass through is formed in the upper fixing plate. The cavity is positioned in the upper fixing plate. When the fixing piece is driven, the lower fixing plate is contacted with the convex block to push the convex block to eject.

In one embodiment, the gap has a distance of 0. When the distance of the gap is 0, the end face of the bump is in contact with the end face of the lower fixing plate, when the fixing piece is driven, the bump is firstly pushed by the lower fixing plate, and the ejector rod is firstly ejected.

In one embodiment, the gap is not 0 apart. The lug is provided with a cylinder penetrating through the lower fixing plate, and the diameter of the lug is larger than that of the cylinder. When the distance of the gap is not 0, a cylinder is arranged below the bump, and a through hole for the cylinder to pass through is arranged on the lower fixing plate. The length of the cylinder depends on the size of the gap.

In the above embodiment, the distance of the different gaps between the push rods is determined according to the specific situation of the product. The sizes of the cavities for accommodating the bumps are different, and the upper end faces of the bumps are in contact with the upper surfaces of the cavities in the initial state.

The present application will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings:

as shown in fig. 1 to 4, the number of the ejection members is 3, and the first ejector rod 1, the second ejector rod 2 and the third ejector rod 3 are respectively arranged from left to right. Under the initial state, the clearance of third ejector pin 3 is 0, and the lug 4 terminal surface of third ejector pin 3 keeps contact with the terminal surface of bottom plate 7, all is equipped with the cylinder 5 that runs through bottom plate 7 on the lug 4 of first ejector pin 1 and the lug 4 of second ejector pin 2, and the up end of lug all keeps contact with the upper surface that holds the chamber 8. The clearance of the first ejector rod 1 is a, the clearance of the second ejector rod 2 is b, and a is larger than b. The bottom of the lower fixing plate 7 is provided with a mold bottom plate 9, and the cylinder 5 is pressed against the end face of the mold bottom plate 9, so that the stability of the first ejector rod 1 and the second ejector rod 2 is ensured during injection molding.

When the injection molding is completed and the ejector rod of the mold needs to be ejected, the upper fixing plate 6 and the lower fixing plate 7 move upwards, and the third ejector rod 3 moves together with the upper fixing plate 6 and the lower fixing plate 7 because the gap between the third ejector rod 3 and the lower fixing plate 7 is 0. When the moving distance between the upper fixing plate 6 and the lower fixing plate 7 is equal to the gap b, the first push rod 1 and the second push rod 2 are stationary, and when the moving distance continues, the second push rod 2 moves along with the upper fixing plate 6 and the lower fixing plate 7. When the moving distance between the upper fixing plate 6 and the lower fixing plate 7 is the gap a, the first ejector rod 1 is immobile, and when the first ejector rod 1 moves continuously, the first ejector rod 1 moves together with the upper fixing plate 6 and the lower fixing plate 7, so that the first ejector rod 1, the second ejector rod 2 and the third ejector rod 3 move at different ejection distances, the moving distance of the second ejector rod 2 is the moving distance of the third ejector rod 3 minus the gap b, the moving distance of the first ejector rod 1 is the moving distance of the third ejector rod 3 minus the gap a, the ejector rods eject sequentially according to different orders, and when any product is injected or die-cast, the sprue can be automatically cut off in a mold and the deformation of the product can be corrected, and the application range is wide.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. The utility model provides an ejection mechanism for mould which characterized in that: the ejection mechanism comprises a fixed part and a plurality of ejection parts in driving connection with the fixed part; a gap is arranged between the ejecting piece and the fixing piece; the distances of the gaps are different.

2. The ejection mechanism applied to the mold according to claim 1, wherein the ejector member comprises an ejector rod and a projection arranged at one end of the ejector rod, and the fixing member is provided with a cavity for accommodating the projection; the gap is formed between the end face of the lug and the inner surface of the fixing piece.

3. The ejection mechanism applied to the mold according to claim 2, wherein the fixing member is composed of an upper fixing plate and a lower fixing plate; the cavity is formed by surrounding the upper fixing plate and the lower fixing plate, and the ejector rod penetrates through the upper fixing plate.

4. The ejection mechanism applied to the mold according to claim 3, wherein the clearance is formed between the end surface of the protrusion and the end surface of the lower fixing plate.

5. The ejection mechanism applied to a mold according to claim 4, wherein the gap has a distance of 0.

6. The ejection mechanism applied to a mold according to claim 4, wherein the gap has a distance other than 0.

7. The ejection mechanism as claimed in claim 6, wherein the protrusion has a cylinder penetrating the lower fixing plate.

8. The ejection mechanism as claimed in claim 7, wherein the protrusion has a diameter larger than a diameter of the cylinder.